// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.


#if NET40

namespace System.ComponentModel.DataAnnotations.Schema
{
    using System.Diagnostics.CodeAnalysis;

    /// <summary>
    /// Specifies how the database generates values for a property.
    /// </summary>
    [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false)]
    [SuppressMessage("Microsoft.Performance", "CA1813:AvoidUnsealedAttributes")]
    public class DatabaseGeneratedAttribute : Attribute
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="DatabaseGeneratedAttribute" /> class.
        /// </summary>
        /// <param name="databaseGeneratedOption"> The pattern used to generate values for the property in the database. </param>
        public DatabaseGeneratedAttribute(DatabaseGeneratedOption databaseGeneratedOption)
        {
            if (!Enum.IsDefined(typeof(DatabaseGeneratedOption), databaseGeneratedOption))
            {
                throw new ArgumentOutOfRangeException("databaseGeneratedOption");
            }

            DatabaseGeneratedOption = databaseGeneratedOption;
        }

        /// <summary>
        /// The pattern used to generate values for the property in the database.
        /// </summary>
        public DatabaseGeneratedOption DatabaseGeneratedOption { get; private set; }
    }
}

#endif
